It has now been over 30 years since the mysterious death of Dian Fossey, the primatologist who transformed the way we see gorillas. Fossey told the world how mountain gorillas live, and fought tooth and nail to save them. Her obsession may have cost her her life. Through extensive and rarely seen archival footage, dozens of Fossey’s letters, interviews with friends and colleagues, and narration by Sigourney Weaver, DianFossey: Secrets in the Mist tells her life story from childhood and her early days researching in Congo, through to her arrival in Rwanda, where she spent 18 years studying and protecting the mountain gorilla population.

With exclusive access to Fossey’s belongings and personal effects, including objects from her cabin where she was brutally slain, the event series explores Fossey’s murder and the investigation and trial of her research student Wayne McGuire, who was found guilty in absentia of her murder by the Rwandan courts.

National Geographic’s three-part global miniseries, Dian Fossey: Secrets in the Mist, offers an intimate account of the life and legacy of the iconic primatologist, 32 years after her violent murder. The series will air globally in 171 countries and in 45 languages.

Dian Fossey left the United States for Africa in December 1966 and began her gorilla studies soon after. While in the central African nation of Rwanda, Fossey fell in love with the species and dedicated her life to ensuring their survival. She became an international icon and renowned primatologist, all while fighting an endless battle against encroaching gorilla poachers. The fight likely cost Fossey her life, though her murder was never definitively solved.

The series is filled with Fossey’s own observations, recorded in her writings and brought to life by Sigourney Weaver, who has a special connection to Fossey. Weaver won a Golden Globe, and was nominated for an Oscar, for her portrayal of Fossey in the 1988 film “Gorillas in the Mist.” Weaver is uniquely placed to recount Fossey’s first hand thoughts and feelings. Acclaimed film director, producer and writer James Marsh serves as executive producer on the miniseries.

Photo by Robert I.M. Campbell

Dian Fossey: Secrets in the Mist presents exclusive access to rare and unseen footage of Fossey in her daily habituations and up-close studies of gorillas. Also featured are in-depth interviews with her close colleagues and friends, including gorilla researcher and doctoral student Wayne McGuire and friend Sir David Attenborough.

The series details her close friendship with the young gorilla Digit, whose merciless mutilation and decapitation by poachers would deeply affect Fossey, as well as the people who worked by her side, including National Geographic photographer Bob Campbell, with whom she fell in love but who would leave her heartbroken when he returned to civilization and his wife.

Fossey was brutally slain in her remote mountain cabin in 1985. The series explores the investigation around her murder and the subsequent trial of McGuire, who was found guilty in absentia by Rwandan courts. McGuire’s conviction has long been questioned by those familiar with the circumstances, and now — with exclusive access to Fossey’s belongings and personal effects, including objects from the scene of her murder as well as a rare interview with McGuire himself — his claims of innocence are given new credence.

Checking in on the legacy of Fossey’s work, Dian Fossey:Secrets in theMist features footage of the Pablo troop of gorillas, descendants of the very gorillas Fossey studied. Thanks to her work in protecting Rwanda’s mountain gorilla population, the group was able to survive the worst years of poaching and threats to their habitat.

Photo by Robert I.M. Campbell

Premiere Episodes include:

“GORILLA GIRL”Wednesday, Dec. 6, at 9/8c
On an isolated mountainside in Rwanda, cries of horror cut through the early morning mist. As day broke on Dec. 27, 1985, wildlife legend Dian Fossey was found dead, murdered in a brutal machete attack. The world-famous icon fought to save mountain gorillas from extinction but made dangerous enemies who may have taken her life.

“DARK SIDE OF THE MOUNTAIN”Wednesday, Dec. 13, at 9/8c
After Dian Fossey’s favorite gorilla was slaughtered and her health began to fail, Sir David Attenborough traveled to Rwanda to film the gorillas. The result was one of television’s most treasured experiences with animals in the wild. However, due to battles with the Rwandan government, Fossey was forced to return to the United States. During this period Fossey wrote “Gorillas in the Mist” and became a global celebrity.

“MURDER ON THE MOUNTAIN”Wednesday, Dec. 20, at 9/8c
Gorilla researcher Wayne McGuire was found guilty of Dian Fossey’s murder after an unskilled investigation by the Rwandan police provided few clues to the mystery. McGuire fled the country before he could be arrested. At the murder trial, a death sentence was passed on Wayne McGuire. He has lived with consequences of his conviction ever since. Did he really kill her or has he been the victim of a 32-year injustice? If not him, then who?

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